I am very conflicted on this.
First, I absolutely believe this was a spurious lawsuit and should have never been brought and I believe the lawyers should be well paid for defending Zep and the plaintiff should be held accountable, but...how far should you take this?
If one musician goes after another and the latter has much deeper pockets, then the latter can simply throw money at the suit and then make the plaintiff absorb those costs regardless of whether they were reasonable or not. This could serve as a serious deterrent for small or independent artists to protect their works against major labels and famous artists.